We have an Esri based system in production; a complicated data model with a large number of feature classes. We need to migrate the data to another spatial reference.
The feature classes have class extensions and relationship classes defined on them, so the behaviour of creating new feature classes for the reprojection result that the standard projection geoprocessing tool exhibits is very cumbersome (class extensions and relationships are lost).
If necessary, we'll code up a solution but would prefer not to. Is it somehow possible, using standard or 3rd party extensions, to do a bulk, in-place reprojection and setting of new spatial reference?